<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    class Phone{
      get price(){
        console.log('价格属性被读取了');
      }
      set price(newVal){
        console.log('价格属性被修改了');
      }
    }
    let s = new Phone();
    console.log(s.price);
    s.price = 'free';
  </script>
</body>
</html>